Specifies a method which attaches one block check character to the transmitted information block (or text) and checks this character when it is received.
Published: 11/30/1981 ISBN(s): 0580123723 Number of Pages: 4File Size: 1 file , 290 KB Product Code(s): 00128121, 00128121, 00128121 Note: This product is unavailable in United Kingdom